Christakis and Fowler have found the same pattern of contagion in other communities, and for willpower challenges as diverse as drug use, sleep deprivation, and depression. As unsettling as it may be, the implication is clear: Both bad habits and positive change can spread from person to person like germs, and nobody is completely immune.
My house has changed so drastically since i started to crawl out of my depression by learning to be a psychologist...
